"Marketplace session expired"

For some reason in MSFS2024 (store version), I can’t do long flights. Because after several minutes, the flight stops and this message pops up:

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This is in the middle of a flight, I was not in the 2024 Marketplace, I was flying. The result after this pops up is like the plane has hit an invisible wall, the plane crashes and the flight ends!

I get this message, but luckily for me the flight carries on in the background and I can just close the message…